Abstract
??The sintering and electrical properties of the hydrothermal PSZT powders obtained by substituting 4, 6 and 8 mol% Sr for Pb in PZT lattice structure were investigated. The lattice constant and particle size decreased in proportion to a quantity of Sr. The sintering properties of PSZT powders showed 7.754 g/㎤ of sintered density and 4 μm of grain size at sintering temperature of 1250℃. Curie temperature lowered gradually from 363.6℃ to 319.2℃ and relative dielectric constants increased rapidly by a quantity of Sr. In comparison to PZT, moreover, the quality factor of PSZT was increased more than three times with increase of Sr mole ratio, and piezoelectric constant (d 31 and g 31 ) was decreased. It was found that dielectric loss of PSZT was decreased by 0.574% which was half of PZT.
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